• Journal of National Security and Military Science
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• s.8
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• pp.383-420
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• 2010

This article is focusing on the improvement of weapon system test & evaluation, aimed at the weapon system in the research development stage. This article suggests improvement directions in three aspects(organization and system, skilled manpower and technology, test facilities of weapon system test & evaluation) as follows. 1) Weapon system test & evaluation organization and system a. Establishment of comprehensive test & evaluation system b. Making regulation for comprehensive test infrastructure management. c. Standardization of test & evaluation process, which can be used in special subject to army, navy and air force. 2) Skilled manpower and technology of weapon system test & evaluation a. Training & education, management of test & evaluation experts. b. Establishment of skill management system of test & evaluation. 3) Test facilities of weapon system test & evaluation a. Establishment of comprehensive improvement direction of test & evaluation installation and equipment. b. Consideration of counter measures to prevent overlapping investment, and to use the test & evaluation resources efficiently. c. Establishment of organic network for the effective use of test & evaluation installation and equipment. d. Establishment of detailed cooperation plan for the commonage of test & evaluation facility and equipment.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.361-364
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• 2005

Some bogie frames manufactured in 1999, 2000 year have the fatal problem. Three or four years later, the cracked end beam among them have discovered in 2002, 2003 year. The crack situation of the end beam have a bad effect on brake system. In that case, the cars would be in danger of derailment. To improve the end beam, a research of covering the whole field of welded type bogie frame was started. Main line real tests were performed at Young-Dong line. The stress of main positions for bogie frame was measured. Also up-down direction and left-right direction vibration acceleration of the bogie frame were measured. At this time the tests were performed for the three types bogie. The test result concludes that the crack cause of the end beam is not brake load but vibration at running mainly. It is estimated that the life of the improved car which end beam reinforced is safe within the car permitted life(25 years). The improvement methods of the end beam are presented by construction modification, parts modification. The integrity evaluation is inspected by analysis the real line test results, the improvement methods of the end beam.

• Journal of the Korea Convergence Society
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• v.10 no.11
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• pp.491-500
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• 2019

The purpose of this study analyzed the overall attitude and perception of course evaluation of nursing students, and suggested improvement direction of course evaluation. The sample consist of 428 A-university students in J province. The collected data were analyzed by SPSS 23.0 program using ANOVA, t-test, and $Scheff{\acute{e}}$ test. As a result, it was confirmed that nursing students participated in course evaluation with a careful and correct response attitude, and course evaluation result was reliable. The instructor should share the process of improving the class by reflecting the evaluation results so that the students can recognize the purpose and importance of course evaluation. In addition, it suggested that it is necessary to develop items of a course evaluation reflecting the characteristic of nursing such as clinical practice courses and to revise the evaluation system.

• The KIPS Transactions:PartD
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• v.14D no.1 s.111
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• pp.57-66
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• 2007

Organizations of Software development are very important issue on enhancement of a software quality as rapid progress of software industry. Especially there are diverse attempts for enhancement of test maturity of the software organization through some kinds of the test maturity model. But the current test maturity models based on CMM(Capability Maturity Model) lack part of actual testing measurement and only measure level of test maturity. To solve these problems, we suggest 'double V-model' to execute both software development process and test process simultaneously, and also 'test attributes to Maturity Levels Correlation Matrix' for evaluating level of test maturity included with definitions of test attribute and level. That is, we enhance TMM(Test Maturity Model) adopted with 'Improvement Suggestion' of TPI(Test Process Improvement) which is easy the evaluation of test maturity of organization and gives the direction of improvement to level up the test maturity for the measured organization. As a result, we will contribute to level up the test maturity of the organization.

• Journal of Power System Engineering
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• v.16 no.6
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• pp.59-65
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• 2012

Torque Generator is a product which has function to transform hydraulic energy to mechanical energy of torque and rotating speed, and be used for direction change device of agricultural machines. This study proposes failure analysis and test analysis on torque generator and introduces a process that reliability of a product is enhanced by design improvement. And also it presents improvements of maximum output torque by modifying design and surface treatment. Lastly it verifies reliability improvement by analyzing test results of before and after life test.

• Korean Security Journal
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• no.62
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• pp.277-293
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• 2020

The purpose of this study is to select the talented and competent personal caregiver personnel through a professional and rational inspection system, and to provide safer personal care services to the public so that the people who are eligible for service can lead a safe life. The purpose of this study is to cultivate qualified and competent personal guardian personnel and provide professional and stable services to the people so that the people who can use the service can lead a safer life. In order to grow into a system that meets the objectives of the personal guardian qualification screening system, it must be revised and supplemented from various evaluation methods. The improvement measures related to the practical test of the system for qualifying personal guardians are as follows. First, the fitness evaluation items should be added. Second, it is necessary to reestablish the test technology. (Remove technology that causes the second threat) (Adds skills that can be used as civilian status) Third, the fallout and application action must be added. Fourth, evaluation in various starting positions is necessary. Fifth, evaluation should be made by diversifying the distance and direction with the opponent.

• Journal of the Korea institute for structural maintenance and inspection
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• v.8 no.4
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• pp.123-133
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• 2004

The evaluation standard method of weld zone in rails is not exhibited in case of the domestic and the outside about ultrasonic inspection method. therefore, practical affairs a mans on the ground know very little about evaluation method of pass and failure. This paper discuss about ultrasonic exploration of weld zone in railway rails to know practical affairs a mans that the first, "problem and improvement direction of domestic track construction specifications applied according to a place ordering" and the second, "the method applied of ultrasonic exploration test of weld zone in railway rails".

• The Korean Journal of Emergency Medical Services
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• v.15 no.3
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• pp.31-44
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• 2011

Purpose : The purpose of emergency medical services(EMS) is to save human lives and assure the completeness of the body in emergency situations. Those who have been qualified on medical practice to perform such treatment as there is the risk of human life and possibility of major physical and mental injuries that could result from the urgency of time and invasiveness inflicted upon the body. In the emergency medical activities, 119 emergency medical technicians mainly perform the task but they are not able to perform such task independently and they are mandatory to receive medical direction. The purpose of this study is to examine the recognition and request for medical direction by 119 emergency medical technicians in order to provide basic information on the development of medical direction program suitable to the characteristics of EMS as well as for the studies on EMS for the sake of efficient operation of pre-hospital EMS. Method : Questionnaire via e-mail was conducted during July 1-31, 2010 for 675 participants who are emergency medical technicians, nurses and other emergency crews in Gyeongbuk. The effective 171 responses were used for the final analysis. In regards to the emergency medical technicians' scope of responsibilities defined in Attached Form 14, Enforcement regulations of EMS, t-test analysis was conducted by using the means and standard deviation of the level of request for medical direction on the scope of responsibilities of Level 1 & Level 2 emergency medical technicians as the scale of medical direction request. The general characteristics, experience result, the reason for necessity, emergency medical technicians & medical director request level, medical direction method, the place of work of the medical director, feedback content and improvement plan request level were analyzed through frequency and percentage. The level of experience in medical direction and necessity were analyzed through ${\chi}^2$ test. Results : In regards to the medical direction experience per qualification, the experience was the highest with 53.3% for Level 1 emergency medical technicians and 80.3% responded that experience was helpful. As for the recognition on the necessity of medical direction, 71.3% responded as "necessary" and it turned out to be the highest of 76.9% in nurses. As for the reason for responding "necessary", the reason for reducing the risk and side-effects from EMS for patients was the largest(75.4%), and the reason of EMS delay due to the request of medical direction was the highest(71.4%) for the reason for responding "not necessary". In regards to the request level of the task scope of emergency medical technicians, injection of certain amount of solution during a state of shock was the highest($3.10{\pm}.96$) for Level 1 emergency rescuers, and the endotracheal intubation was the highest($3.12{\pm}1.03$) for nurses, and the sublingual administration of nitroglycerine(NTG) during chest pain was the highest($2.62{\pm}1.02$) for Level 2 emergency medical technicians, and regulation of heartbeat using AED was the highest($2.76{\pm}.99$) for other emergency crews. For the revitalization of medical direction, the improvement in the capability of EMS(78.9%) was requested from emergency crew, and the ability to evaluate the medical state of patient was the highest(80.1%) in the level of request for medical director. The prehospital and direct medical direction was the highest(60.8%) for medical direction method, and the emergency medical facility was the highest(52.0%) for the placement of medical director, and the evaluation of appropriateness of EMS was the highest(66.1%) for the feedback content, and the reinforcement of emergency crew(emergency medical technicians) personnel was the highest(69.0%) for the improvement plan. Conclusion : The medical direction is an important policy in the prehospital EMS activity because 119 emergency medical technicians agreed the necessity of medical direction and over 80% of those who experienced medical direction said it was helpful. In addition, the simulation training program using algorithm and case study through feedback are necessary in order to enhance the technical capability of ambulance teams on the item of professional EMS with high level of request in the task scope of emergency medical technicians, and recognition of medical direction is the essence of the EMS field. In regards to revitalizing medical direction, the improvement of the task performance capability of 119 emergency medical technicians and medical directors, reinforcement of emergency medical activity personnel, assurance of trust between emergency medical technicians and the emergency physician, and search for professional operation plan of medical direction center are needed to expand the direct medical direction method for possible treatment beforehand through the participation by medical director even at the step in which emergency situation report is received.

• Journal of Biomedical Engineering Research
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• v.34 no.1
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• pp.24-33
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• 2013

To enhance the speech perception of hearing aid users in noisy environment, most hearing aid devices adopt various beamforming algorithms such as the first-order differential microphone (DM1) and the two-stage directional microphone (DM2) algorithms that maintain sounds from the direction of the interlocutor and reduce the ambient sounds from the other directions. However, these conventional algorithms represent poor directionality ability in low frequency area. Therefore, to enhance the speech perception of hearing aid uses in low frequency range, our group had suggested a fractional delay subtraction and integration (FDSI) algorithm and estimated its theoretical performance using computer simulation in previous article. In this study, we performed a KEMAR test in non-reverberant room that compares the performance of DM1, DM2, broadband beamforming (BBF), and proposed FDSI algorithms using several objective indices such as a signal-to-noise ratio (SNR) improvement, a segmental SNR (seg-SNR) improvement, a perceptual evaluation of speech quality (PESQ), and an Itakura-Saito measure (IS). Experimental results showed that the performance of the FDSI algorithm was -3.26-7.16 dB in SNR improvement, -1.94-5.41 dB in segSNR improvement, 1.49-2.79 in PESQ, and 0.79-3.59 in IS, which demonstrated that the FDSI algorithm showed the highest improvement of SNR and segSNR, and the lowest IS. We believe that the proposed FDSI algorithm has a potential as a beamformer for digital hearing aid devices.

• Journal of Fisheries and Marine Sciences Education
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• v.26 no.1
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• pp.203-213
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• 2014

The purpose of this study was to search for the ideal role and performance assessment(PA) in the current school system of Korea, and then to propose some suggestions to improve PA, based on the previous research. The result of the study is presented below. The direction of PA application in school was made to follow the theoretical meaning of PA, to solve the problems related ti its adoption in school, and to help teachers educate students more effectively. The main goal of PA application in term of 'school education' is to help students learn more effectively. That is, the assessment is not only for the evaluation, but also for improving students' learning. PA can be used to assess students' strength and weakness in terms of their academic achievement of various fields of the subject. Also, PA can be used to assess students' academic achievement as an alternative method to the multiple-choice test. Finaly, the results of this study propose some suggestions about how to conduct PA in school to the stakeholders such as educational authorities, schools, teachers, students and parents.